The invention thus relates to a radiation module incorporating a support, at least one heating and/or heat conducting element and a temperature exchanging element made by extrusion and constituted by a single-piece base with an internal face incorporating at least one means to integrate the heating and/or heat conducting element and an external face incorporating radiation fins wherein the module incorporate a diffuser receiving infrared radiation from the temperature exchanging element, said diffuser enabling infrared radiation to be emitted of a wavelength that is less than that of the radiation received.